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On average, symptoms from E. coli O157:H7 infection develop within 3 to 4 days of eating contaminated food, with a range of 1 to 10 days. Symptoms usually include severe bloody diarrhea and abdominal cramps; sometimes the infection causes non-bloody diarrhea or no symptoms.
According to the Centers for Disease Control and Prevention (CDC), Ebola symptoms typically appear within 8 to 10 days after exposure; however, symptoms can appear as early as two days after exposure or take as long as three weeks to appear. Extreme fatigue is often the first and most prominent symptom. Other symptoms include: 1  diarrhea. 2  fever. 3  headache. 4  muscle pain. 5  stomach pain. 6  unexplained bleeding or bruising. 7  vomiting.